**********************************************************/
#include "util/u_memory.h"
+#include "util/u_hash.h"
#include "svga_debug.h"
#include "svga_winsys.h"
/**
* Compute the bucket for this key.
- *
- * We simply compute log2(width) for now, but
*/
static INLINE unsigned
svga_screen_cache_bucket(const struct svga_host_surface_cache_key *key)
{
- unsigned bucket = 0;
- unsigned size = key->size.width;
-
- while ((size >>= 1))
- ++bucket;
-
- if(key->flags & SVGA3D_SURFACE_HINT_INDEXBUFFER)
- bucket += 32;
-
- assert(bucket < SVGA_HOST_SURFACE_CACHE_BUCKETS);
-
- return bucket;
+ return util_hash_crc32( key, sizeof *key ) % SVGA_HOST_SURFACE_CACHE_BUCKETS;
}
unsigned bucket;
unsigned tries = 0;
+ assert(key->cachable);
+
bucket = svga_screen_cache_bucket(key);
pipe_mutex_lock(cache->mutex);
pipe_mutex_unlock(cache->mutex);
-#if 0
- _debug_printf("%s: cache %s after %u tries\n", __FUNCTION__, handle ? "hit" : "miss", tries);
-#else
- (void)tries;
-#endif
+ if (SVGA_DEBUG & DEBUG_DMA)
+ debug_printf("%s: cache %s after %u tries (bucket %d)\n", __FUNCTION__,
+ handle ? "hit" : "miss", tries, bucket);
return handle;
}
struct svga_host_surface_cache_entry *entry = NULL;
struct svga_winsys_surface *handle = *p_handle;
+ assert(key->cachable);
assert(handle);
if(!handle)
pipe_mutex_lock(cache->mutex);
if(!LIST_IS_EMPTY(&cache->empty)) {
- /* use the first empty entry */
- entry = LIST_ENTRY(struct svga_host_surface_cache_entry, cache->empty.next, head);
+ /* use the first empty entry */
+ entry = LIST_ENTRY(struct svga_host_surface_cache_entry, cache->empty.next, head);
- LIST_DEL(&entry->head);
- }
+ LIST_DEL(&entry->head);
+ }
else if(!LIST_IS_EMPTY(&cache->unused)) {
/* free the last used buffer and reuse its entry */
entry = LIST_ENTRY(struct svga_host_surface_cache_entry, cache->unused.prev, head);
- SVGA_DBG(DEBUG_DMA, "unref sid %p\n", entry->handle);
+ SVGA_DBG(DEBUG_CACHE|DEBUG_DMA,
+ "unref sid %p (make space)\n", entry->handle);
sws->surface_reference(sws, &entry->handle, NULL);
LIST_DEL(&entry->bucket_head);
entry->handle = handle;
memcpy(&entry->key, key, sizeof entry->key);
+ SVGA_DBG(DEBUG_CACHE|DEBUG_DMA,
+ "cache sid %p\n", entry->handle);
LIST_ADD(&entry->head, &cache->validated);
}
else {
/* Couldn't cache the buffer -- this really shouldn't happen */
- SVGA_DBG(DEBUG_DMA, "unref sid %p\n", handle);
+ SVGA_DBG(DEBUG_CACHE|DEBUG_DMA,
+ "unref sid %p (couldn't find space)\n", handle);
sws->surface_reference(sws, &handle, NULL);
}
for(i = 0; i < SVGA_HOST_SURFACE_CACHE_SIZE; ++i) {
if(cache->entries[i].handle) {
- SVGA_DBG(DEBUG_DMA, "unref sid %p\n", cache->entries[i].handle);
+ SVGA_DBG(DEBUG_CACHE|DEBUG_DMA,
+ "unref sid %p (shutdown)\n", cache->entries[i].handle);
sws->surface_reference(sws, &cache->entries[i].handle, NULL);
}
{
struct svga_winsys_screen *sws = svgascreen->sws;
struct svga_winsys_surface *handle = NULL;
+ boolean cachable = SVGA_SURFACE_CACHE_ENABLED && key->cachable;
+
+ SVGA_DBG(DEBUG_CACHE|DEBUG_DMA,
+ "%s sz %dx%dx%d mips %d faces %d cachable %d\n",
+ __FUNCTION__,
+ key->size.width,
+ key->size.height,
+ key->size.depth,
+ key->numMipLevels,
+ key->numFaces,
+ key->cachable);
+
+ if (cachable) {
+ if (key->format == SVGA3D_BUFFER) {
+ /* For buffers, round the buffer size up to the nearest power
+ * of two to increase the probability of cache hits. Keep
+ * texture surface dimensions unchanged.
+ */
+ uint32_t size = 1;
+ while(size < key->size.width)
+ size <<= 1;
+ key->size.width = size;
+ /* Since we're reusing buffers we're effectively transforming all
+ * of them into dynamic buffers.
+ *
+ * It would be nice to not cache long lived static buffers. But there
+ * is no way to detect the long lived from short lived ones yet. A
+ * good heuristic would be buffer size.
+ */
+ key->flags &= ~SVGA3D_SURFACE_HINT_STATIC;
+ key->flags |= SVGA3D_SURFACE_HINT_DYNAMIC;
+ }
- if (SVGA_SURFACE_CACHE_ENABLED && key->format == SVGA3D_BUFFER) {
- /* round the buffer size up to the nearest power of two to increase the
- * probability of cache hits */
- uint32_t size = 1;
- while(size < key->size.width)
- size <<= 1;
- key->size.width = size;
-
handle = svga_screen_cache_lookup(svgascreen, key);
- if (handle)
- SVGA_DBG(DEBUG_DMA, " reuse sid %p sz %d\n", handle, size);
+ if (handle) {
+ if (key->format == SVGA3D_BUFFER)
+ SVGA_DBG(DEBUG_CACHE|DEBUG_DMA,
+ "reuse sid %p sz %d (buffer)\n", handle,
+ key->size.width);
+ else
+ SVGA_DBG(DEBUG_CACHE|DEBUG_DMA,
+ "reuse sid %p sz %dx%dx%d mips %d faces %d\n", handle,
+ key->size.width,
+ key->size.height,
+ key->size.depth,
+ key->numMipLevels,
+ key->numFaces);
+ }
}
if (!handle) {
key->numFaces,
key->numMipLevels);
if (handle)
- SVGA_DBG(DEBUG_DMA, "create sid %p sz %d\n", handle, key->size);
+ SVGA_DBG(DEBUG_CACHE|DEBUG_DMA,
+ " CREATE sid %p sz %dx%dx%d\n",
+ handle,
+ key->size.width,
+ key->size.height,
+ key->size.depth);
}
return handle;
{
struct svga_winsys_screen *sws = svgascreen->sws;
- if(SVGA_SURFACE_CACHE_ENABLED && key->format == SVGA3D_BUFFER) {
+ /* We only set the cachable flag for surfaces of which we are the
+ * exclusive owner. So just hold onto our existing reference in
+ * that case.
+ */
+ if(SVGA_SURFACE_CACHE_ENABLED && key->cachable) {
svga_screen_cache_add(svgascreen, key, p_handle);
}
else {
- SVGA_DBG(DEBUG_DMA, "unref sid %p\n", *p_handle);
+ SVGA_DBG(DEBUG_DMA,
+ "unref sid %p (uncachable)\n", *p_handle);
sws->surface_reference(sws, p_handle, NULL);
}
}
projects / mesa.git / blobdiff